Typewriting and like machine



HFA/RYA. HE/NR/CH 2 Sheets-Sheet 1 H. A. HEINRICH TYPEWRITING AND LIKE vMACHINE Filed Dec. 5, 1938 July 23, 1940.

July 23, 1940 H. A. HEINRICH 2,208,794

TYPEWRITING AND LIKE MACHINE Filed Dec. 5, 1938 2 Sheets-Sheet 2 Patented July 23, 1940 TYPEWR/ITING AND LIKE MACHINE Henry A. Heinrich, Middletown, Conn., assignor to Remington Rand Inc., Buffalo, N. Y., acorporation of Delaware Application December 5, 193s, serial No. 243,976

17 Claims.

My invention relates to typewriting and like machines, and more particularly to improved means for clamping cards or the like to the platen of such machines.

The main object of my invention, generally stated, is to provide improved, highly eicient and reliable card clamping means for typewriting and like machines whereby a card or like article may be fed either forward or backward with the platen as may be desired. v

A more specific object of `my invention is to provide improved card clamping means of the character specied which are operated automatically during the rotation of the platen for` opening and closing the card clamp at given points in such rotation whether a forward or backward feed of the card is being effected.

To the above and other ends which will hereinafter appear, my invention consists in the features of construction, arrangements of parts and combinations of devices set forth in the following description and particularly pointed out in the appended claims.

In the drawings, wherein like reference characters designate corresponding parts in thedifferent views:

Fig. 1 is a fragmentary front elevation View of a platen and associated parts of a No. 10 Remington Noiseless Typewriting Machine equipped with the devices of my invention.

Fig. 2 is an enlarged, fragmentary, longitudinal sectional view of the platen and certain associated parts shown in Fig. l, the section being taken on the line 2-2 of Fig. 6 and viewed in the direction of the arrows at said line` Fig. 3 is an enlarged transverse sectional View of the same taken on line 3 3 of Fig-1 and viewed in the direction of the arrows at said line, the card clamp being shown in the released p,o sition.

Fig. 4 is a view similar to Fig. 3 but showing Various parts as they appeared at a different rotated position of the platen and with the card clamp closed.

Fig. 5 is an enlarged transverse sectionalview taken on line 5 5 of Fig. 1 viewed inithegdirection of the arrows at said line; the parts'being shown as they appear at the rotated position of the. platen shown in Fig. 3.

Fig. 6 is an enlarged transverse sectional View taken on line 6-6 of Fig. l and viewed in the direction of the arrows at said line; the parts also being shown as they appear at the rotated position of the platen shown in Fig. 3. A

Fig. '7 is a View similar to Fig. v6 but showing certain partsfas they appear at the rotated position of the platen shown in Fig. 4.

Fig. 8 is another View similar to Fig. 6 but showing certain parts as they appear at still a diiferent position of rotation of the platen.

I have shown my invention embodied in the present instance in a No. ,10 Remington Noiseless machine in which the features of the present invention may be readily incorporated with but few changes in the existing structure. However, it is to be understood that my invention is not restricted to embodiment in such machine, but may be employed in various other types of typewriting and like machines wherever found available.

I havey shown in thedrawings only so much of the usual construction of the No. 10 Remington Noiseless machine as is necessary to arrive at an understanding of my invention and its embodiment therein.

The platen shown in the accompanying drawings is generally the type employed inthe No. 10 Remington Noiseless machine, and as may be seen in Fig. 2 the. platen includes a metal shell IIl which has permanently secured thereto at its left hand end a platen head II having a concentric platen shaft section or. trunnion I2. This platen shaft may be of the usual construction adapted to be detachably mounted in the usual manner for rotation in the left hand carriage end plate of the machine. A similar platen head I4 is secured to the right `hand end 'of the platen shell I0 by several spaced screws I5, one of which is shown in Fig. 2. The platen head I4 is provided with a concentric platen shaft section or y trunnion I6 which carries a bearing bushing I1 that enables the platen to be detachably mounted in theusual manner for rotation in `the right Y hand carriage end plate I8. A finger piece ory twirler I9 may be provided having an inwardly extending hub portion 20 threaded on the extending endjof the platen trunnion I6. A covering 24 y of suitable rubber composition is attached iny the usual'manner to theouter surface of the metal shell Ill. l,

'The usual paper feeding means may be employed to coact with the platen, which has been shown in Fig. l and Fig. 3, for' example, as including front feed rollers 26 and back feed rollers 28 and paper apron 30, all of which are mounted on the usual mechanism wherebythey are spring pressed towardthe platen to hold 'a work sheet or the like in contactr with the platen covering 24. The feed rollers 26 and 28 extend through respective openings Vin a curved paper apron Sii extending beneath and in the rear of the platen in the usual manner.

The features thus far described are, or may be, of the usual construction'.

The card clamping means of the present invention includes a clamping member in the form of metal strip 34, preferably extending longitudinally substantially throughout the length of the platen. The member 34 coacts with a recessed or l'iattened portion 35 on the surface of the platen which extends longitudinally of the platen substantially throughout the length thereof. The clamp 34 may be provided with an inwardly turned portion 34a (see Fig. 2) at its lefthand end, said portion 34a registering with an opening 34D in the flattened portion 35 of the platen covering 24, which portion 34a may serve as a guide for the side edge of a card.

A series of spaced plungers 36 extend radially from the interior of the platen through companion openings in the shell lil and cover 24. The outer end of each of the plungers 36 is attached by a screw 31 to the clamp 34 along a lcentral line thereof so as to leave an overlapping portion along both sides of the clamp and beneath either of which overlapping sides of the 'clamp an edge portion of a card may be received, as shown in Figs. 3 and 8. A reduced inner end portion 36a of each of the plungers 3% passes through a companion opening in a connecting bar 38, and the portion 36a may be riveted thereto as shown in Figs. 2 and 3. The bar 3B extends longitudinally within the platen about the lengthof the clamp 34 and thus serves to securely join the inner ends o-f all the plungers 36.

A compression spring 40 extends between each end portion of the bar 38 and the opposite inner wall of the shell Iii. The inner end of each of the springs 40 surrounds a companion pin 4l secured to the bar 38 to prevent lateral displacementof the spring. The force ofthe springs 45 on the bar 38 thus acts through the plungers 36 to move the clamp 34 to and resiliently hold it in an outward or open released position.

The means for closing the clamp 34 includes a rock shaft 45 extending longitudinally of the platen within the shell IB and passing through 'an opening 46 provided in the central portion of each of the plungers 36. As may be seen in Fig. 2, the left hand end of the rock shaft 45 is rotatively supported and guided in a bearing slot or opening 48 in the left hand platen head Il. The right hand end of the rock shaft 45 passes through a bearing slot or opening 49 in right hand platen head I4. As may be seen in Fig. 3 and Fig. 4, a cam'surface is formed along the rock shaft 45 by a at side 45a extending longitudinally thereof and substantially throughout its length. It may also be seen that the opening 46 in each of the plungers 3E is provided Awith a flat end wall 45a, and when the rock shaft 45 is turned from the position shown in Fig. 4 to that shown inFig. 3, this straight end wall portion 46a is.held in engagement with the flat side 45EL of the rock shaft by the force of the springs 4i! thus holding the card clamp in the released position by the force of said springs.

` In order to support the rock shaft 45 against the outward force of the springs 49 acting thereon through the plungers 36, a sleeve 41 is'provided around each of the plungers 36. Each of these sleeves 41 may be slotted as shown in Figs. -3 and 4 to receive the enlarged flat portion of the companion plunger 35 which sur-rounds the opening 46 therein, Each sleeve 41 extends between the outer surface of the rock shaft 45 and the inner surface of the shell I and thereby prevents outward flexing o-f the intermediate portion of the rock shaft 45 by the force of the springs 40.

Referring to Fig. 3, it will be noted that the -curved outer end wall of the opening 46 in each of the plungers 36 is spaced outwardly from the curved surface of the rock shaft 45 when the straight wall 46a is held in engagement with the flat side 45a of the rock shaft. Thus, when the rock shaft 45 is turned in either direction from the position shown in Fig. 3, one of the edges of the flat side 45a will exert a camming action against the straight wall portion iiiZL to move all of the plungers 36 inwardly against the force of the springs 45 to a position such as that shown in Fig. 4. This inward movement of the plungers 36 positively draws the clamp 34 inwardly to a closed position with relation to the flat surface 55 of the platen covering 24 and against the -intervening lcard to be held by the clamp.

Means are provided in accordance with the present invention for automatically turning the rock shaft 45 to open and close the clamp 34 by a rotation of the platen to and from the positions shown in Figs. 3 and 4 respectively for example. This automatically operating means for turning the rock shaft to thereby open and close the clamp are also arranged in accordance with the present invention to open and close the clamp by a rotation of the platen toand from a dierent position shown in Fig. 8 to facilitate the feeding of a card either backward or forward with the platen as may be desired.

The illustrated means for automatically operating the rock shaft 45 in the present instance includes a control finger or arm 5i) carried by a portion o-f the rock shaft which extends outside the platen head I4. An operative connection between the arm and the rock shaft 45 is effected in accordance with the present invention to afford a slight extent of resilient movement of the arm relative to the rock shaft, for purposes which will later be described in detail. This resilient connection is shown particularly in Fig. 2 and Fig. 5 wherein it may be seen that an opening 5i is provided in the arm 5E) to receive the end of the rock shaft 45, which opening is shorter than the opening 48 in each of the plungers 36 but otherwise of generally the same shape. An expansion spring 52 extends between the end wall of a centrally disposed opening in the arm 50 and a recessed attened portion at 45a near the right hand end of the rock shaft 45.

As may be seen in Fig. 5, the force of the spring 52 thus acts between the arm 55 and the rock Shaft 45 to normally hold a straight wall portion 5Ia of the opening in the arm 50 into engaged relation with the at side 45E of the rock shaft. The tension of the spring 52 is such that normally a turning movement of the arm 56 will turn the rock shaft 45 and effect an inward movement of the plungers 36 against the force of the spring 40 without separating the surfaces 45a and Sla. However, when a full extent of inward movement of the clamp 34 cannot be effected due to its engagement with a card, say, of unusual thickness, it will'be clear that a continued movement of the arm 50 may be afforded by a pivotal movement thereof about an edge of the fiat side 45a of the rock shaft against the force of the spring 52,

The outer rounded end of the finger or arm ilcoac'ts duringA rotation of the platen with a 'of the rock shaft 45 about its axis.

fixed circular track formed in the present instance by the inner surface of a flange 54 on a disc 55. The outer surface of the flange 54 may be substantially the same diameter as the platen covering 24, and the disc 55 is provided with a centrally disposed opening receiving the right hand platen trunnion I6. The disc 55 is held in spaced relation to the platen head I4, jointly by the end of the rock shaft 45 and by the end of headed pins 51 extending outwardly from the platen head I4, as shown in Fig. 2 and Fig. 6. The disc 55 is retained against outward displacement on the trunnion I6 by a collar 58 attached at 59 to said trunnion.

The disc 55 is held against rotation with the platen by a shouldered pin 60 threaded into the right hand carriage end plate I B and extending inwardly therefrom into a slot 6I provided in the disc 55, as shown in Fig, 5. The provision of the slot 6I and pin 60 permits a platen provided with the disc 55 to be removed from the carriage as a single unit and yet provides an effective means for retaining the disc against rotation.

As previously stated, the rounded end of the nger or arm 50 coacts with the inner surface of the ange 54, and in order to automatically open and close the clamp 34 at either of two predetermined control positions of rotation of the platen, two openings 54 and 66 are provided at different locationsI in the flange 54. In Figs. 2, and 6, the end of the arm 50 is shown extending through the opening 64 thereby resulting in a radial position of the arm relative to the platen. 'I'his radial position of the arm 50 in turn effects a position of the rock shaft 45 to allow the clamp 34 to be operated to and retained in an open position under the force of the springs as previously described.

At the position of the platen shown in Fig. 3 and Fig. 6, the top edge portion of a card 68 may be inserted in the space between the clamp 34 and the attened portion 35 of the platen so that the edge of the card rests against the sides of the plungers 36. If the platen is turned in aV forward or clockwise direction as viewed in Figp, the rounded outer end of the arm 50 will coact with the walls of the opening B4 in the flange 54 to cause a displacement of the arm from its radial position to the extent shown, for example, in Fig. 7. Thus, the linger or arm 50 coacts with the stationary ange 54 during the initial portion of the rotation of the platen from its position shown in Fig. 6, to turn the rock shaft about its axis vand close the clamp 34 thereby securely and posim tively clamping the edge portion of the card 68 against the portion 35 of the platen. Inasmuch as the circular track formed by the inner surface Aof the flange 54 is concentric with the axis of the platen a continued rotation of the platen in a clockwise direction will hold the clamp closed and feed the card 68 forward with the platen past the feed rollers 28 and 25 to the first line writing position, such as shown in Fig. 4 and Fig. 7. If the platen is rotated still farther in a clockwise direction from the position shown in Fig. 4 and Fig. '7, the rounded end of the nger or arm 50 will pass the opening 66 in the flange 54, but when the arm is displaced from its radial alignment in the direction shown in Fig. 7, this direction of movement of the end of the arm past the opening 66 will not afford an effective turning movement In other words, when the outer end of the nger or arm V5I) is trailing the rock shaft as it passes either one of the openings 66 or 64,7only a slight move- If it is desired to remove the card 68 from the clamp when the platen reaches the original position shown in Fig. 3 and Fig. 6, the platen is iirst rotated slightly past such position in a clockwise direction until the trailing end of the arm 5U enters the opening 64, and upon a subsequent backward rotation of the platen in a counterclockwise direction, the rounded end of the linger coacts with the walls of the opening 64 to restore the arm to its radial position, as shown in Fig. 6. This radial position of the arm operates through the rock shaft 45 to allow the clamp 34 toopen under the force of the springs 40 thereby releasing the card 68.

If it is desired to feed a card backward with the platen, the platen may be rotated in either direction slightly past its position illustrated in Fig. 8 and the clamp 34 may then be opened by a slight movement in the reverse direction to .effect a radial position of the arm 50 in the manner just described. Thus, the parts will be positioned as shown in Fig. 8 which permits the bottom edge portion of a card 'I0 to be placed between the clamp 34 and the flattened portion 35 of the platen in the same general manner as described in connection with the position of the platen as shown in Fig. 6, except that in this case, the bottom portion of the card I0 coacts with a portion of the clamp 34 which extends at the opposite side of the plungers 35.

When the card 'I5 is inserted in the open clamp 34 as shown in Fig. 8, the platen may be rotated in a counter-clockwise direction by the nger piece I9 to close the clamp by the coaction of the nger with the walls of the opening 66. The card may then be fed with the platen backward past the feed rollers 26 and 28 to the first line writing position.

In writing on the card 10, the forward. line spacing may be effected in the usual manner by turning the platen in a clockwise direction as viewed in Fig. 8. At the completion of the writing on the card k'IIL the platen may be turned in a clockwise direction to its illustrated position in Fig. 8 wherein the clamp 34 will be immediately opened due to the fact that, as the platen approaches this position, the outward end of the will coact with the walls of the opening '65 1n a manner to move the arm to its radial position for releasing the clamp.

It will be clear that the control finger or arm 5I) is operated in every instance a fixed distance to and from a radial position but the closing movement of the clamp 34 will vary depending on the thickness of the card which is clamped thereby. Thus the resilient connection between the arm 50 and the rock shaft 45 is provided in the present instance to allow the arm to complete its fixed extent of movement from its radial position after further movement on the rock shaft has been obstructed by the engagement of the clamp withv the surface of the card. This movement of the control iinger or arm 56 relative' to the rock shaft 45 against the force of the spring 52 will vary to a slight extent depending on the thickness of the card engaged by the clamp, but in every instance the tension of the spring 52 will provide a secure and substantially positive gripping pressure of the clamp on the card, i;

arm 5U will be leading the rock shaft 45 and thus It will be seen that I have thus provided an improved, highly efficient and reliable card clamp for the platen of typewriting and like machines. A particular feature of the present invention is the provision of operating means for the card clamp whereby rotation of the platen in either direction from a predetermined control position wherein the clamp is open, automatically operates to close the clamp and to hold the clamp in an eiective closed position regardless of the extent of rotation of the platen in the same direction. This automatic operating means is then arranged to open the clamp when the platen is turned in an opposite direction back to said predetermined control position.

In a specic form of the present invention shown herein, there are two such predetermined control positions of the platen wherein the clamp may be opened or closed, one of such predetermined control positions being associated with the forward feed of a card and the other being associated with-the backward feed of a card. This feature of the present invention permits the clamp to be automatically closed by rotation of the platen in one direction or the other from either of these two predetermined control positions and also permits the clamp to be automatically opened by turning the platen in an opposite direction back to either of such positions,

A further important feature of the present invention is in the provision of an automatic operating means for closing the clamp including a resilient means to effectively clamp cards regardless of their thickness.

The two openings 64 and Sshown in the present construction for controlling the opening and closing of the clamp through the control finger 50 are provided primarily in order to open the clamp at positions which are convenient for the insertion of the top of a card in one instance and the bottom of a card in another instance. depending on whether the card is to be fed forward or backward. However, if desired, only one of such openings could be provided, and the card could be inserted in the clamp at the same position thereof regardless of the direction in which it may be desired to feed the card.

Various other changes may be made in the construction, and certain features thereof may be omitted, without departing from my invention as it is dened in the accompanying claims.

What I claim as new and desire to secure by Letters Patent is:

l. In a typewriting or-like machine, the combination of a carriage, a rotative platen carried thereby, a card clamp carried by the platen and engageable with a card t'o feed it either back-- ward or forward with the platen as may be desired, and automatically operating means controlled by the rotation of the platen for selectively operating said clamp at a given point in such rotation depending on the direction of rotation with respect to the last previous direction of rotation thereof.

2. In a typewriting or like machine, the combination of a carriage, a rotative platen carried thereby, a card clamp carried by the platen and engageable with a card to feed it, and automatically operating means dependent on the direction of rotation of the platen for opening and closing said clamp at given points in the rotation of the platen, said automatically operating means comprising a control member fixed to the carriage against rotation with the platen and having a circular track with one or more open- 3. In a typewriting or like machine, the combination of a carriage, a rotative platen carried thereby, a card clamp carried by the platen and engageable with a card to feed it, and automatically operating means dependent on the rotation of the platen for opening and closing said clamp at given points in the rotation of the platen, said automatically operating means "comprising a control member fixed to the carriage against rotation with the platen and having a circular track with one or more openings therein, a control finger carried by the platen in cooperative relation to said track to assume one position relative to the platen while in contact with the track and to be moved into said opening or openings by rotation of the platen to thereby assume another position relative to the platen, a rock shaft carried by the platen and controlled in its rocking movement by said control finger, and means controlled by said rock shaft for controlling the opening and closing of said card clamp.

4. In a typewriting or like machine, the combination of a carriage, a rotative platen carried thereby, a card clamp carried by the platen and engageable with a card to feed it, and automatically operating means dependent on the rotation of the platen for opening and closing said clamp' at given points in the rotation of the platen, said automatically operating means comprising a control member xed to the carriage against rotation with the platen and having a circular track with one or more openings therein, a control finger carried by the platen in cooperative relation to said track to assume one position relative to the platen while in contact with the track and to be moved into said opening or openings by rotation of the platen to thereby assume another position relative to the platen, a rock shaft carrie-d by the platen and controlled in its rocking movement by said control finger, a cam on said rock shaft, and means connected to said card clamp and with which said cam coacts to control the opening and closing of the card clamp.

5. In a typewriting or like machine, the combination of a carriage, a rotative platen carried thereby, a card clamp carried by the platen and engageable with a card to feed it, and automatically operating means dependent on the rotation of the platen for opening and closing said clamp at given points in the rotation of the platen, said automatically operating means comprising a control member xed to the carriage against rotation with the platen and having a circular track with one or more openings therein, a control finger kcarried by the platen in cooperative relation to said track to assume one position relative to the platen while in contact with the track and to be moved into said opening or openings by rotation of the platen to thereby assume another position relative to the platen, a rock shaft carried by ythe platen and controlled in its rocking movement by said control nger, spring means that exert their force to tend to open said card clamp, a cam on said rock shaft, and means connected to said card clamp and with which said cam coacts to over- .fill

come the force of said spring means and positively move the card clamp to closing or effective position.

6. In a typewriting or like machine, the combination of a carriage, a rotative platen carried thereby, a card clamp carried by the platen and engageable with a card to feed it either backward or forward with the platen as may be desired, and automatically operating means dependent on the rotation of the platen for opening and closing said clamp at given points in such rotation whether the card is being fed backward or forward with the platen, said automatically operating means comprising a control member fixed to the carriage against rotation with the platen and having a circular track with a plurality of openings therein, a control finger carried by the platen in cooperative relation to said track to assume one position relative to the platen while in contact with the. track and to be moved into said opening by rotation of the platen to thereby assume another position relative to the platen and means actuated by said control finger for controlling the opening and closing of said card clamp.

7. In a typewriting or like machine, the comination of a carriage, a rotative platen carried thereby, a card clamp carried by the platen and engageable with a card to feed it either backward or forward with the platen as may be desired, and automatically operating means depending on the rotation of the platen for opening and closing said clamp at given points in such rotation whether the card is being fed backward or forward with the platen, said automatically operating means comprising a control member fixed to the carriage against rotation with the platen and having a circular track with a plurality of openings therein, a control finger carried by the platen and movable therewith and cooperating with said track to extend radially of the platen through either of said openings in the track at predetermined positions of rotation of the platen and to be moved in either direction from said radial position depending on the direction of rotation and means actuated bymovement of said control finger to and from its radial position to control the opening and closing of said card clamp.

8. In a typewriting or like machine, the conibination of a carriage, a rotative platen carried thereby, a card clamp carried by the platen and engageable with a card to feed it either backward or forward with the platen as may be desired, and automatically operating means dependent on the rotation of the platen for opening and closing said clamp at given points in such rotation whether the card is being fed backwardr or forward with the platen, said automatically operating means comprising a control member fixed to the carriage against rotation with the platen and having a circular track with a plurality of openings therein, a control finger carried by the platen and movable therewith and relatively thereto and which cooperates with said track and with the openings therein, a rock shaft carried by the platen and controlled in its rocking movements by said control finger, spring means that exert their force to tend to open said card clamp, a cam on said rock shaft, and means connected to said card clamp and with which said cam coacts to control the `opening and closing of the card clamp, the construction and arrangement being such that when the control finger engages said track the card clamp will be held closed and when the control finger extends through said opening the card clamp will be opened or released.

9i In a typewriting or like machine, the combination of a carriage, a rotative platen carried thereby, a card clamp carried by the platen and engageable with a card to feed it, and automatically operating means dependent on the rotation of the platen for opening and closing said clamp at given points in the rotation of the platen, said automatically operating means comprising a control member fixed to the carriage against rotation with the platen and having a circular track with one or more openings therein, a control finger carried by the platen and movable therewith and cooperating with said track to extend radially of the platen through an opening in the track at a predetermined position of rotation of the platen and to be moved either side of said radial position depending on the direction of rotation of the platen from said predetermined position,- and means actuated by movement of said control finger either side of said radial position for closing said card clamp.

10. In a typewriting or like machine, the combination of a carriage, a rotative platen carried thereby, a card clamp carried by the platen and engageable with a card to feed it, and automatically operating means dependent on the rotation of the platen for opening and closing said clamp at given points in the rotation of the platen, said automatically operating means comprising a con-I posed between said card clamp and control finger to enable the card clamp to compensate for various thicknesses of cards that may be clamped in position thereby'.

11. In a typewriting or like machine, the combination of a carriage, a rotative platen carried thereby, a card clamp carried by the platen and engageable with a card to feed it either backward or forward with the platen as may be desired, and automatically operating means dependent on the rotation of the platen for opening and closing said clamp at given points in such rotation whether the card is being fed backward or forward with the platen, said automatically operating means comprising a control member fixed to the carriage against rotation with the platen and having a circular track with a plurality of openings therein, a control finger carried by the platen and movable therewith and relatively thereto and which cooperates with said track and with the openings therein to be moved thereby to a plurality of different positions relative to the platen during rotation of the platen, means actuated by said control finger for controlling the opening and closing of said card clamp, and spring means interposed between said card clamp and control finger to enable the card clamp to compensate for various thicknesses of cards that may be clamped in position thereby.

l2. In a typewriting or like machine, the combination of a carriage, a rotative platen carried thereby, a card clamp carried by the platen and engageable with a card to feed it either backward or forward with the platen as may be desired, and automatically operating means dependent on the rotation of the platen for opening and closing said clamp at given points in such rotation whether the card is being fed backward or for ward with the platen, said automatically operating means comprising a control member fixed to the carriage against rotation with the platen and having a circular track with a plurality of openings therein, a control finger carried by the platen and movable therewith and relatively thereto and which cooperates with said track and with the openings therein, a rock shaft carried by the platen and controlled in its rocking movements by said control finger, means controlled by said rock shaft for controlling the opening and closing of said card clamp, and a spring interposed between said control finger and rock shaft.

13. In a typewriting or like machine, the combination of a carriage, a rotative platen carried thereby, a card clamp carried by the platen, a spring means for opening said clamp and means for automatically controlling the opening and closing of said clamp comprising a circular track connected to the carriage against rotation with the platen, a rock shaft carried by the platen and adapted to close said clamp against the force of said spring means, a control finger cooperating with said circular track, and resilient means connecting said control finger with said rock shaft, said resilient means being arranged to yield only when closing movement of said clamp is positively arrested.

14. In a typewriting or like machine, the combination of a rotative platen, a card clamp carried thereby, a rock shaft extending longitudinally within the platen, a plurality of radially disposed plungers connected to said clamp, spring means coacting with said plungers, cam means on said rock shaft coacting with said plungers to operate said clamp against the force of said spring means by rotation of said rock shaft, and means asso'- ciated with said plungers for preventing lateral exing of said rock shaft during operation of said clamp thereby.

15. In a typewriting or like machine, the combination of a carriage, a platen rotatively mounted therein, a card clamp carried by the platen and movable relative thereto to open and closed positions, a control finger carried by the platen and movable in either direction to and from a radial position relative thereto for controlling the opening and closing of said clamp, and means secured to the carriage against rotation with the platen and coacting with said control finger to distinctively control the movements thereof in accordance with the direction of rotation of the platen.

16. In a typewriting or like machine, the combination of a carriage, a platen rotatively mounted therein, a card clamp carried by the platen and movable relative thereto to open and closed positions, means carried by the platen and movable relative thereto to control the opening and closing movements of said clamp, and means secured to the carriage against rotation with the platen and coacting with said means carried by the platen to close said clamp by a rotation of the platen past a predetermined point in either one direction or the other direction depending on the last previous direction of rotation of the platen past said predetermined point.

17. In a typewriting or like machine, the combination of a carriage, a platen rotatively mounted therein, a card clamp carried by the platen and movable relative thereto to open and closed positions, controlling means secured to the carriage against rotation with the platen, and means carried by the platen and cooperating with said controlling means secured to the carriage to close said clamp upon rotation of the platen in one direction past a predetermined position and to hold said clamp in its closed position upon continued rotation of the platen in the same direction past said predetermined position.

HENRY A. HEINRICH.

- CERTIFCATE OF CORRECTION Patent No. 2,208,7914.. July 25 1914.0.

I HENRY A. HEINRICH.

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 6, firs-t column, line 15,'c1aim 12, yafter' the word "therein" and 'before` the'comma insert --to be moved thereby to a plurality of different positions relative to the l'p11-tten during rotation of the platenn.; and that the said .Letters `Patent should be. read with this correction-therein that the same may conform to the record of the casexin the Patent Office.

signed and sealed this 17th day' of september, A. D. 191m.

` Henry nVan` .Arsdalet (Seal) Acting Commissioner of Patents.4 

